objective: this experimental in vitro study compared marginal adaptation of indirect composite, glass-ceramic inlays and direct composite. materials and methods: seventy-five recently extracted human molars were randomly divided into three groups (n=25) and mesio-occluso-distal cavities with the same dimensions were prepared in the teeth. indirect composite and glass-ceramic inlays were fabrica...

A major problem of the positive theory of income taxation is to explain why statutory income tax schedules in practice are marginal-rate progressive. While it is commonly believed that this is but a simple consequence of the fact that the number of relatively poor voters exceeds that of richer voters in general, putting this contention in a voting equilibrium context is not a trivial task. We d...

This paper estimates the effect of marginal tax rates on demands for various financial assets, using the 1983-1989 Survey of Consumer Finances (SCF) panel. In the crosssection, marginal tax rates appear to have a strong and statistically significant influence on portfolio allocations, even after controlling for income and wealth. For example, people with high tax rates tend to hold larger share...

This paper considers some fundamental questions concerning marginally trapped surfaces, or apparent horizons, in Cauchy data sets for the Einstein equation. An area estimate for outermost marginally trapped surfaces is proved. The proof makes use of an existence result for marginal surfaces, in the presence of barriers, curvature estimates, together with a novel surgery construction for margina...

This research combined three distinctly unique and separate measures of corruption into one corruption factor, so as to yield a robust measurement approach to further understand the political and socioeconomic variables of corruption. The findings show that a strong significant variable in measuring corruption is the personal marginal-tax rate, especially in hierarchical based nations. The high...

Within the framework of a dynamic Computable General Equilibrium model this paper analyses the impact of trade restrictions on regional rates of return on capital, marginal costs of abatement and optimal climate policy. It will be shown that regional differences both in marginal costs of abatement and in the marginal productivity of capital are driven by market imperfection. With restrictions o...

UNLABELLED Resection of the ascending ramus of the mandible can result in considerable functional and esthetic damage. AIM To compare the survival rate and local and regional recurrence in marginal and segmental mandibulectomy for advanced tonsil and retromolar trigone tumours with no mandibular invasion. PLACE AND PERIOD: Reference Head & Neck Service, between October 1994 and December 2001....

We consider the optimal sequential irreversible investment policy of a value maximizing firm facing decreasing returns to scale and interest rate uncertainty. We characterize the optimal accumulation policy and its value for a broad class of interest rate models by focusing on the marginal investment decision and deriving the marginal value of capital. We also state a set of conditions under wh...

This paper analyses the impact of effective average and marginal tax rates on the size of the capital stock owned by foreign affiliates of US multinational companies. We use data on 20 OECD countries, 1983-1998. A simple two-stage model of location choice, and investment conditional on location, identifies the role of each form of effective tax rate. The results indicate a large and significant...

This paper examines the impact of US income and payroll taxes on the decision of wage-and-salary employees to become self-employed. I exploit variations in the tax treatment of wage and self-employment income using the Panel Study of Income Dynamics. Results show that differential taxation has significant effects on the probability of making a transition into self-employment. Reducing an indivi...